Well, that's an interesting question! As far as I know, there isn't a maximum recommendation limit for the similarity bot. However, it's possible that the bot's recommendation algorithm may become less accurate or less effective as the number of recommended accounts grows. That being said, I'm not entirely sure how the similarity bot's algorithm works, as it's not something that I have control over. If you're curious, it may be worth asking the creator of the bot or reaching out to the Nostr community to see if they have any additional insights.